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respiration and ethylene

Fang Tian, Weiliang Chen, Gongjian Fan, Tingting Li, Cai'E Wu, Xiaohong Kou, Zhihao Wu
BACKGROUND: The effects of Ginkgo biloba seed exopleura extract (GSEE) and chitosan (CH) coating on the preservation of ginkgo seeds were investigated. RESULTS: Results showed that chitosan could alleviate the decay rate, and that CH combined with GSEE treatment (CH-GSEE) further inhibited the development of seed decay due to the additional antifungal activity of GSEE. The nutrient contents, including water, starch, and soluble protein, were maintained by both CH-GSEE and CH treatment...
December 10, 2018: Journal of the Science of Food and Agriculture
Jordi Giné-Bordonaba, Gemma Echeverria, Elisabet Duaigües, Gloria Bobo, Christian Larrigaudière
Apple quality and the storage potential likely depend on a range of physiological and biochemical events occurring throughout fruit development and ripening. In this study, we investigated the major physiological (ethylene production and respiration) and biochemical changes (related to sugar and malic acid content as well as antioxidant metabolism) occurring during growth and on-tree ripening of two apple varieties ('Granny Smith' (GS) and 'Early Red One' (ERO)) with known differences in their postharvest behaviour, mainly firmness loss and susceptibility to superficial scald...
November 1, 2018: Plant Physiology and Biochemistry: PPB
Zhaowan Shi, Tamar Halaly-Basha, Chuanlin Zheng, Mira Weissberg, Ron Ophir, David W Galbraith, Xuequn Pang, Etti Or
Transient increases in ethylene biosynthesis, achieved by tight regulation of transcription of specific ACC oxidase and ACC synthase genes, play a role in activation of grapevine bud dormancy release. The molecular mechanisms regulating dormancy release in grapevine buds are as yet unclear. It has been hypothesized that its core involves perturbation of respiration which induces an interplay between ethylene and ABA metabolism that removes repression and allows regrowth. Roles for hypoxia and ABA metabolism in this process have been previously supported...
November 3, 2018: Plant Molecular Biology
Martina Puccinelli, Fernando Malorgio, Leon A Terry, Roberta Tosetti, Irene Rosellini, Beatrice Pezzarossa
BACKGROUND: Selenium (Se) enrichment of plants seems effective in enhancing the health-related properties of produce, and in delaying plant senescence and fruit ripening. The current study investigated the effects of Se on tomato fruit ripening. Tomato (Solanum lycopersicum L.) plants were grown in hydroponics with different Se-enriched nutrient solutions. Se, as sodium selenate, was added at rate of 0 mg L-1 (control), 1 mg L-1 , and 1.5 mg L-1 . RESULTS: Selenium was absorbed by roots and translocated to leaves and fruit...
October 27, 2018: Journal of the Science of Food and Agriculture
Qiang Guo, Yuki Yoshida, Ian T Major, Kun Wang, Koichi Sugimoto, George Kapali, Nathan E Havko, Christoph Benning, Gregg A Howe
Plant immune responses mediated by the hormone jasmonoyl-l-isoleucine (JA-Ile) are metabolically costly and often linked to reduced growth. Although it is known that JA-Ile activates defense responses by triggering the degradation of JASMONATE ZIM DOMAIN (JAZ) transcriptional repressor proteins, expansion of the JAZ gene family in vascular plants has hampered efforts to understand how this hormone impacts growth and other physiological tasks over the course of ontogeny. Here, we combined mutations within the 13-member Arabidopsis JAZ gene family to investigate the effects of chronic JAZ deficiency on growth, defense, and reproductive output...
November 6, 2018: Proceedings of the National Academy of Sciences of the United States of America
Yi Chen, Jérôme Grimplet, Karine David, Simone Diego Castellarin, Javier Terol, Darren C J Wong, Zhiwei Luo, Robert Schaffer, Jean-Marc Celton, Manuel Talon, Gregory Alan Gambetta, Christian Chervin
Fruits have been traditionally classified into two categories based on their capacity to produce and respond to ethylene during ripening. Fruits whose ripening is associated to a peak of ethylene production and a respiration burst are referred to as climacteric, while those that are not are referred to as non-climacteric. However, an increasing body of literature supports an important role for ethylene in the ripening of both climacteric and non-climacteric fruits. Genome and transcriptomic data have become available across a variety of fruits and we leverage these data to compare the structure and transcriptional regulation of the ethylene receptors and related proteins...
November 2018: Plant Science: An International Journal of Experimental Plant Biology
Xiaoyang Zhu, Qiumian Li, Jun Li, Jun Luo, Weixin Chen, Xueping Li
Aromatic compounds are important for fruit quality and can vary among fruit cultivars. Volatile compounds formed during the ripening of two banana cultivars, Brazilian and Fenjiao, were determined using headspace solid-phase micro-extraction (SPME) and gas chromatography coupled with mass spectrometry (GC-MS). These two cultivars exhibited different physiological characteristics during storage. Fenjiao fruit exhibited faster yellowing and softening, a higher respiration rate and greater ethylene production...
September 25, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Penta Pristijono, Michael C Bowyer, Christopher J Scarlett, Quan V Vuong, Costas E Stathopoulos, John B Golding
The green Tahitian limes ( Citrus latifolia ) were exposed to 7.2 kJ m-2 UV-C and 0.5 μL L-1 1-methylcyclopropene (1-MCP) treatments both separately and in combination. After treatment, fruit were stored in ethylene free (i.e. air containing < 0.005 μL L-1 ) or 0.1 μL L-1 ethylene at 20 °C and 100% RH. The results showed that UV-C treatment delayed skin degreening and reduced endogenous ethylene production compared to untreated control fruit, however these effects reduced over the storage time...
July 2018: Journal of Food Science and Technology
Tarık Yarılgaç, Hayrullah Kadim, Burhan Ozturk
BACKGROUND: A study was conducted to determine the effects of modified-atmosphere packaging (MAP) treatments on fruit quality attributes and bioactive compounds of cornelian cherry fruits (Cornus mas L.) harvested at two different maturity stages - maturity (M): M-1, skin red color <10%; M-2, skin red color >90% - throughout the shelf life. Fruits were stored at 0 ± 0.5 °C and 90 ± 5% relative humidity (RH) for 30 days, and then kept at 22 ± 0.5 °C and 80 ± 5% RH over 3 days for shelf life...
June 13, 2018: Journal of the Science of Food and Agriculture
Pushpendra Kumar, Shruti Sethi, R R Sharma, Manish Srivastav, Dinesh Singh, Eldho Varghese
Plum is a perishable fruit with a very short shelf life of 3-4 days. Several studies have suggested the possible use of edible coatings on maintaining quality and prolonging storage life of fresh horticultural produce. Hence, different edible coatings, namely, lac-based (2:3), Semperfresh™ (1:3) and Niprofresh® (1:5) were selected to observe their efficacy on quality retention of 'Santa Rosa' plums. The effects of these coatings on the physical, physiological and biochemical attributes were studied under cold storage conditions (2 ± 1 °C and 85-90% relative humidity)...
June 2018: Journal of Food Science and Technology
Andreas Schulte, Jana Viola Schilling, Jannis Nolten, Anna Korona, Hannes Krömke, Jan-Bernd Vennekötter, Britta Schillheim, Matthias Wessling, Uwe Conrath, Jochen Büchs
BACKGROUND: Ethylene is an important plant hormone that controls many physiological processes in plants. Conventional methods for detecting ethylene include gas chromatographs or optical mid-infrared sensors, which are expensive and, in the case of gas chromatographs, are hardly suitable for automated parallelized online measurement. Electrochemical ethylene sensors are cheap but often suffer from poor resolution, baseline drifting, and target gas oxidation. Thus, measuring ethylene at extremely low levels is challenging...
June 1, 2018: BMC Plant Biology
Evangelos Karagiannis, Michail Michailidis, Katerina Karamanoli, Athina Lazaridou, Ioannis S Minas, Athanassios Molassiotis
Sweet cherry, a non-climacteric and highly perishable fruit, is usually cold-stored during post-harvest period to prevent senescence; therefore, metabolic profiling in response to cold storage in sweet cherry is of economic and scientific interest. In the present work, metabolic analysis was performed in fruit and stem tissues to determine the metabolic dynamics associated with cold storage in response to 1-methylcyclopropene (1-MCP), an ethylene-action inhibitor, and modified atmosphere packaging (MAP). Fruit (cv...
June 2018: Plant Physiology and Biochemistry: PPB
Jen-Yi Huang, Fengying Xu, Weibiao Zhou
BACKGROUND: With the ability to tailor wavelengths necessary to the photosynthetically active radiation spectrum of plant pigments, light-emitting diodes (LEDs) offer vast possibilities in horticultural lighting. The influence of LED light irradiation on major postharvest features of banana was investigated. Mature green bananas were treated daily with selected blue (464-474 nm), green (515-525 nm) and red (617-627 nm) LED lights for 8 days, and compared with non-illuminated control...
November 2018: Journal of the Science of Food and Agriculture
Rakesh Kumar, Vajir Tamboli, Rameshwar Sharma, Yellamaraju Sreelakshmi
Several Penjar accessions of tomato grown in the Mediterranean exhibit prolonged shelf life and harbor alcobaca mutation. To uncover the metabolic basis underlying shelf life, we compared four Penjar accessions to Ailsa Craig. Three accessions bore alcobaca mutation, whereas the fourth was a novel NAC-NOR allele. Cuticle composition of Penjars varied widely during fruit ripening. All Penjars exhibited delayed ripening, prolonged on-vine and off-vine shelf life, low ethylene emission, and carotenoid levels. Metabolic profiling revealed shifts in Krebs cycle intermediates, amino acids, and γ-aminobutyric acid levels indicating the attenuation of respiration in Penjars during post-harvest storage...
September 1, 2018: Food Chemistry
Talita M Santos, Men de Sá M Souza Filho, Ebenézer de O Silva, Márcia R S da Silveira, Maria Raquel A de Miranda, Mônica M A Lopes, Henriette M C Azeredo
The quality of zein (Z)- and zein-tannic acid (ZTA)-coated guavas was monitored throughout 12 days of storage. Coated fruit showed lower changes in terms of visual appearance, chlorophyll contents and color. Weight loss, softening, and changes in soluble solids were also decreased by the coatings. The respiration peak as well as H2 O2 and superoxide dismutase activity peaks were delayed by the coatings, and the ethylene production was reduced. So, the results were consistent with a slowed down ripening of guavas by the coatings, which was probably related to lowered oxygen permeability of guava skin...
August 15, 2018: Food Chemistry
Zhong Zhang, Jian Huang, Xingang Li
The fruit of Chinese jujube (Ziziphus jujuba Mill.) is immensely popular worldwide, while its fleshy fruit has a very short shelf life and suffers serious postharvest damage. The fruit has been controversially classified as non-climacteric, though the mechanisms underlying its ripening behavior, particularly the role of ethylene, have remained unclear. In this study, low and stable ethylene production was detected during ripening of Z. jujuba 'Dongzao' fruit, with production increasing at the full maturity stage...
May 2018: Journal of Plant Physiology
Yiheng He, Jiaying Li, Qiuyan Ban, Shoukun Han, Jingping Rao
Brassinosteroids (BRs) are phytohormones that regulate numerous processes including fruit ripening. In this study, persimmon ( Diospyros kaki L.) fruits were treated with 24-epibrassinolide (EBR) or brassinazole (Brz, a BR biosynthesis inhibitor) and then stored at ambient temperature. The results show that endogenous BR contents gradually increased during persimmon fruit ripening. EBR treatment significantly increased both the content of water-soluble pectin and the activities of polygalacturonase, pectate lyase, and endo-1,4-beta-glucanase but significantly reduced the content of acid-soluble pectin and cellulose, resulting in rapid fruit softening...
March 21, 2018: Journal of Agricultural and Food Chemistry
Robert S Amoah, Leon A Terry
BACKGROUND: The potential of 1-methylcyclopropene (1-MCP) to maintain postharvest storage of sweet potato was studied. In two separate experiments, the orange-fleshed sweet potato cv. Covington was treated with 1-MCP (1.0 µL L-1 , 24 h) and roots stored at 15 °C. During storage, samples were evaluated for the respiration rate, sprout growth, weight loss, incidence of decay and changes in dry matter. The roots were further assayed for the temporal changes in individual non-structural carbohydrates and phenolic compounds in the skin and flesh tissues of the proximal (stem end), middle and distal (root end) regions...
September 2018: Journal of the Science of Food and Agriculture
Rushna Munir, Dennis Konnerup, Hammad A Khan, Kadambot H M Siddique, Timothy D Colmer
During soil waterlogging, plants experience O2 deficits, elevated ethylene, and high CO2 in the root-zone. The effects on chickpea (Cicer arietinum L.) and faba bean (Vicia faba L.) of ethylene (2 μL L-1 ), CO2 (2-20% v/v) or deoxygenated stagnant solution were evaluated. Ethylene and high CO2 reduced root growth of both species, but O2 deficiency had the most damaging effect and especially so for chickpea. Chickpea suffered root tip death when in deoxygenated stagnant solution. High CO2 inhibited root respiration and reduced growth, whereas sugars accumulated in root tips, of both species...
February 27, 2018: Plant, Cell & Environment
Hailong Yan, Shuyue Guo, Fei Wu, Ping Yu, Huibiao Liu, Yuliang Li, Lanqun Mao
Graphdiyne oxide (GDO), the oxidized form of graphdiyne (GDY), exhibits an ultrafast humidity response with an unprecedented response speed (ca. 7 ms), which is three times faster than that of graphene oxide (GO) with the same thickness and O/C ratio. The ultrafast humidity response of GDO is considered to benefit from the unique carbon hybridization of GDO, which contains acetylenic bonds that are more electron-withdrawing than ethylenic bonds in GO, consequently giving rise to a faster binding rate with water...
April 3, 2018: Angewandte Chemie
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